1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char sccsid[] = "@(#)filter.c 5.7 (Berkeley) 2/26/91"; 36 #endif /* not lint */ 37 38 #include <sys/types.h> 39 #include <pwd.h> 40 #include <unistd.h> 41 #include <stdio.h> 42 #include <ctype.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include "error.h" 46 #include "pathnames.h" 47 48 char *lint_libs[] = { 49 IG_FILE1, 50 IG_FILE2, 51 IG_FILE3, 52 IG_FILE4, 53 0 54 }; 55 extern char* processname; 56 int lexsort(); 57 /* 58 * Read the file ERRORNAME of the names of functions in lint 59 * to ignore complaints about. 60 */ 61 getignored(auxname) 62 char *auxname; 63 { 64 reg int i; 65 FILE *fyle; 66 char inbuffer[256]; 67 int uid; 68 char filename[128]; 69 char *username; 70 struct passwd *passwdentry; 71 72 nignored = 0; 73 if (auxname == 0){ /* use the default */ 74 if ( (username = (char *)getlogin()) == NULL){ 75 username = "Unknown"; 76 uid = getuid(); 77 if ( (passwdentry = (struct passwd *)getpwuid(uid)) == NULL){ 78 return; 79 } 80 } else { 81 if ( (passwdentry = (struct passwd *)getpwnam(username)) == NULL) 82 return; 83 } 84 strcpy(filename, passwdentry->pw_dir); 85 (void)strcat(filename, ERRORNAME); 86 } else 87 (void)strcpy(filename, auxname); 88 #ifdef FULLDEBUG 89 printf("Opening file \"%s\" to read names to ignore.\n", 90 filename); 91 #endif 92 if ( (fyle = fopen(filename, "r")) == NULL){ 93 #ifdef FULLDEBUG 94 fprintf(stderr, "%s: Can't open file \"%s\"\n", 95 processname, filename); 96 #endif 97 return; 98 } 99 /* 100 * Make the first pass through the file, counting lines 101 */ 102 for (nignored = 0; fgets(inbuffer, 255, fyle) != NULL; nignored++) 103 continue; 104 names_ignored = (char **)Calloc(nignored+1, sizeof (char *)); 105 fclose(fyle); 106 if (freopen(filename, "r", fyle) == NULL){ 107 #ifdef FULLDEBUG 108 fprintf(stderr, "%s: Failure to open \"%s\" for second read.\n", 109 processname, filename); 110 #endif 111 nignored = 0; 112 return; 113 } 114 for (i=0; i < nignored && (fgets (inbuffer, 255, fyle) != NULL); i++){ 115 names_ignored[i] = strsave(inbuffer); 116 (void)substitute(names_ignored[i], '\n', '\0'); 117 } 118 qsort(names_ignored, nignored, sizeof *names_ignored, lexsort); 119 #ifdef FULLDEBUG 120 printf("Names to ignore follow.\n"); 121 for (i=0; i < nignored; i++){ 122 printf("\tIgnore: %s\n", names_ignored[i]); 123 } 124 #endif 125 } 126 127 int lexsort(cpp1, cpp2) 128 char **cpp1, **cpp2; 129 { 130 return(strcmp(*cpp1, *cpp2)); 131 } 132 133 int search_ignore(key) 134 char *key; 135 { 136 reg int ub, lb; 137 reg int halfway; 138 int order; 139 140 if (nignored == 0) 141 return(-1); 142 for(lb = 0, ub = nignored - 1; ub >= lb; ){ 143 halfway = (ub + lb)/2; 144 if ( (order = strcmp(key, names_ignored[halfway])) == 0) 145 return(halfway); 146 if (order < 0) /*key is less than probe, throw away above*/ 147 ub = halfway - 1; 148 else 149 lb = halfway + 1; 150 } 151 return(-1); 152 } 153 154 /* 155 * Tell if the error text is to be ignored. 156 * The error must have been canonicalized, with 157 * the file name the zeroth entry in the errorv, 158 * and the linenumber the second. 159 * Return the new categorization of the error class. 160 */ 161 Errorclass discardit(errorp) 162 reg Eptr errorp; 163 { 164 int language; 165 reg int i; 166 Errorclass errorclass = errorp->error_e_class; 167 168 switch(errorclass){ 169 case C_SYNC: 170 case C_NONSPEC: 171 case C_UNKNOWN: return(errorclass); 172 default: ; 173 } 174 if(errorp->error_lgtext < 2){ 175 return(C_NONSPEC); 176 } 177 language = errorp->error_language; 178 if(language == INLINT){ 179 if (errorclass != C_NONSPEC){ /* no file */ 180 for(i=0; lint_libs[i] != 0; i++){ 181 if (strcmp(errorp->error_text[0], lint_libs[i]) == 0){ 182 return(C_DISCARD); 183 } 184 } 185 } 186 /* check if the argument to the error message is to be ignored*/ 187 if (ispunct(lastchar(errorp->error_text[2]))) 188 clob_last(errorp->error_text[2], '\0'); 189 if (search_ignore(errorp->error_text[errorclass == C_NONSPEC ? 0 : 2]) >= 0){ 190 return(C_NULLED); 191 } 192 } 193 return(errorclass); 194 } 195